# BGG category for the quantum Schr\"odinger algebra

## TL;DR

This paper investigates the structure of the BGG category for the quantum Schrödinger algebra, establishing equivalences with known categories and demonstrating the wild representation type of finite-dimensional modules.

## Contribution

It provides a classification of the BGG category for the quantum Schrödinger algebra and constructs an explicit equivalence with quiver representations, revealing the wild nature of finite-dimensional modules.

## Key findings

- Equivalence between certain subcategories and quantum group categories
- Construction of a functor to quiver representations
- Finite-dimensional modules category is wild

## Abstract

In this paper, we study the BGG category $\mathcal{O}$ for the quantum Schr{\"o}dinger algebra $U_q(\mathfrak{s})$, where $q$ is a nonzero complex number which is not a root of unity. If the central charge $\dot z\neq 0$, using the module $B_{\dot z}$ over the quantum Weyl algebra $H_q$, we show that there is an equivalence between the full subcategory $\mathcal{O}[\dot z]$ consisting of modules with the central charge $\dot z$ and the BGG category $\mathcal{O}^{(\mathfrak{sl}_2)}$ for the quantum group $U_q(\mathfrak{sl}_2)$. In the case that $\dot z=0$, we study the subcategory $\mathcal{A}$ consisting of finite dimensional $U_q(\mathfrak{s})$-modules of type $1$ with zero action of $Z$. Motivated by the ideas in \cite{DLMZ, Mak}, we directly construct an equivalent functor from $\mathcal{A}$ to the category of finite dimensional representations of an infinite quiver with some quadratic relations. As a corollary, we show that the category of finite dimensional $U_q(\mathfrak{s})$-modules is wild.